The AUDI A6 (2004-09) 4DR SALOON 3.2 FSI S LINE is a large, premium four-door saloon, aimed at buyers wanting more space and comfort than a family hatchback. In the UK it sits among executive cars, competing with the BMW 5 Series and Mercedes-Benz E-Class. Its restrained styling and S line trim give it a sportier appearance without losing the A6’s practical, grown-up feel. The 3.2-litre petrol engine suits confident motorway cruising and smooth, comfortable longer journeys, while the saloon’s roomy cabin and boot make it useful for couples or families. It is best for drivers prioritising refinement, space and performance over low running costs; fuel use and maintenance can be higher than in smaller or diesel alternatives. Mycarcheck’s small sample—four look-ups across two VINs—reports an £800 average private-sale valuation, 146,000 miles, 3,000 annual miles and 2.75 previous keepers. Treat these as a snapshot, and check each car’s history and condition carefully.